3GPP Broadband Evolution to IMT-Advanced - 4G Americas

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This translates to a peak network rate close to 2 Mbps and a user-achievable data rate ofwell over 1 Mbps!Evolved EDGE ImplementationTable 15 shows what is involved in implementing the different features defined forEvolved EDGE. For a number of features, there are no hardware changes required for thebase transceiver station (BTS). For all features, Evolved EDGE is compatible with legacyfrequency planning.Table 15: Evolved EDGE Implementation 99In conclusion, it is interesting to note the sophistication and capability that is achievablewith, and planned for, by GSM.UMTS-HSPA TechnologyUMTS has garnered the overwhelming majority of new 3G spectrum licenses with 283commercial networks already in operation. 100 Compared to emerging wirelesstechnologies, UMTS technology is mature and benefits from research and developmentthat began in the early 1990s. It has been thoroughly trialed, tested, and commerciallydeployed. UMTS deployment is now accelerating with stable network infrastructures andattractive, reliable mobile devices that have rich capabilities. With the addition of HSPAfor high-speed packet data services, UMTS-HSPA is quickly emerging as the dominantglobal mobile-broadband network.UMTS employs a wideband CDMA radio-access technology. The primary benefits of UMTSinclude high spectral efficiency for voice and data, simultaneous voice and data capabilityfor users, high user densities that can be supported with low infrastructure costs, supportfor high-bandwidth data applications, and a clean migration to VoIP in the future.99 Source: 3G Americas’ member company contribution.100 Source: Informa Telecoms & Media, “World Cellular Information Service,” June 2009.Transition to 4G: 3GPP Broadband Evolution to IMT-Advanced, Rysavy Research/3G Americas, Aug 2010 Page 78
Operators can also use their entire available spectrum for both voice and high-speed dataservices.Additionally, operators can use a common core network that supports multiple radioaccessnetworks including GSM, EDGE, WCDMA, HSPA, and evolutions of thesetechnologies. This is called the UMTS multi-radio network, and it gives operatorsmaximum flexibility in providing different services across their coverage areas (see Figure31).Figure 31: UMTS Multi-radio NetworkGSM/EDGEPacket-SwitchedNetworksWCDMA,HSDPAUMTSCore Network(MSC, HLR,SGSN, GGSN)Circuit-SwitchedNetworksOthere.g., WLANOther CellularOperatorsRadio-Access NetworksExternal NetworksThe UMTS radio-access network consists of base stations referred to as Node B(corresponding to GSM base transceiver systems) that connect to RNCs (corresponding toGSM base station controllers [BSCs]). The RNCs connect to the core network as do theBSCs. When both GSM and WCDMA access networks are available, the network can handover users between these networks. This is important for managing capacity, as well asin areas in which the operator has continuous GSM coverage, but has only deployedWCDMA in some locations.Whereas GSM can effectively operate like a spread-spectrum system 101 , based on timedivision in combination with frequency hopping, WCDMA is a direct-sequence, spreadspectrumsystem. WCDMA is spectrally more efficient than GSM, but it is the widebandnature of WCDMA that provides its greatest advantage—the ability to translate theavailable spectrum into high data rates. This wideband technology approach results in theflexibility to manage multiple traffic types including voice, narrowband data, andwideband data.WCDMA allocates different codes for different channels, whether for voice or data, and itcan adjust the amount of capacity, or code space, of each channel every 10 msec withWCDMA Release 99 and every 2 msec with HSPA. WCDMA creates high-bandwidth trafficchannels by reducing the amount of spreading (using a shorter code) with WCDMARelease 99 and higher-order modulation schemes for HSPA. Packet data users can sharethe same codes as other users, or the network can assign dedicated channels to users.101 Spread spectrum systems can either be direct sequence or frequency hopping.Transition to 4G: 3GPP Broadband Evolution to IMT-Advanced, Rysavy Research/3G Americas, Aug 2010 Page 79
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Quality of service (QoS). By priori
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Figure 4: WCDMA-HSPA Voice and Data
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It is clear that both EDGE and UMTS
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TechnologyNameType Characteristics
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Europe are providing operators with
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MHz, in Japan at 1500 MHz and in Eu
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and VoIP operation. These approache
Page 27 and 28: will be able to build applications
Page 29 and 30: Leveraging this success, operators
Page 31 and 32: VoIP for HSPA. Since LTE uses an IP
Page 33 and 34: Figure 10: Different Deployment Sce
Page 35 and 36: Figure 11: Radio Resource Managemen
Page 37 and 38: IEEE 802.16e-2005 and now IEEE 802.
Page 39 and 40: attempts, no terrestrial wireless-d
Page 41 and 42: DownlinkPeakNetworkSpeedPeakand/orT
Page 43 and 44: DownlinkUplinkPeakNetworkSpeedPeaka
Page 45 and 46: Figure 13: HSDPA Performance of a 7
Page 47 and 48: Figure 15: HSPA+ Performance Measur
Page 49 and 50: Figure 17: LTE Throughput in Variou
Page 51 and 52: Figure 19: Latency of Different Tec
Page 53 and 54: Figure 20: Performance Relative to
Page 55 and 56: Figure 21: Comparison of Downlink S
Page 57 and 58: Incremental redundancy in error cor
Page 59 and 60: Figure 23: Comparison of Voice Spec
Page 61 and 62: Figure 24: Relative Volume of Subsc
Page 63 and 64: Technology EDGE/HSPA/LTE CDMA2000 W
Page 65 and 66: capacity of OFDMA-based approaches
Page 67 and 68: In this section, we consider differ
Page 69 and 70: To understand the evolution of data
Page 71 and 72: how EDGE functions including networ
Page 73 and 74: Alternatively, the original number
Page 75 and 76: In today’s EDGE systems, f12 thro
Page 77: DAS-9 16 QAM 217.6DAS-10 32 QAM 262
Page 81 and 82: HSDPAHSPA refers to networks that s
Page 83 and 84: Figure 33: User DiversitySignal Qua
Page 85 and 86: Initial devices enabled peak user r
Page 87 and 88: “single-stream MIMO” or “MIMO
Page 89 and 90: Given the large amount of backhaul
Page 91 and 92: connection between the network and
Page 93 and 94: Figure 39: HSPA One-Tunnel Architec
Page 95 and 96: Figure 40: High-Speed Forward Acces
Page 97 and 98: elatively straightforward changes i
Page 99 and 100: on LTE began in 2004 with an offici
Page 101 and 102: Figure 45: LTE OFDMA Downlink Resou
Page 103 and 104: Single base-station antenna versus
Page 105 and 106: TX antennas and most devices will o
Page 107 and 108: Figure 48: Evolution of Voice in an
Page 109 and 110: Table 19: IMT-Advanced Requirements
Page 111 and 112: Beyond wider bandwidths, LTE-Advanc
Page 113 and 114: As discussed in more detail in the
Page 115 and 116: Different technologies spanning Wi-
Page 117 and 118: stations, and because of the narrow
Page 119 and 120: Support for new radio-access networ
Page 121 and 122: AbbreviationsThe following abbrevia
Page 123 and 124: GBR - Guaranteed Bit RateGbyte - Gi
Page 125 and 126: PHY - Physical LayerPMI - Precoding
Page 127 and 128: Additional Information3G Americas m
Page 129 and 130:
Ericsson: HSPA voice migration, Jun
Page 131 and 132:
SNL Kagan: press release, “SNL Ka
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3GPP Broadband Evolution to IMT-Advanced - 4G Americas

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